1988: a new mission awaits the mercenary Jake Contra. This time he is tasked with investigating a secret mega-weapon in possession of the Soviets. Contra flies to Abkhazia, on the Black Sea coast. There to welcome him is Marika, a spy who plays both sides, and Sergeant Volkov of the Black Sea Pumas, a secret paramilitary corp that deals with dirty business for the KGB.

Contra will discover that the secret weapon in possession of the Russians is the Behemoth KV-VI Tank, an updated model of the old Behemoth prototype used by the Red Army during the Second World War: a monstrous tracked war machine with three nuclear missile turrets.

With the help of a Georgian revolutionary group, Contra will manage to destroy the Behemoth KV-VI and thus prevent its use in the war in Afghanistan.